Univention UCS 4.3 repos

I just upgraded Univention UCS Server to 4.3
as I had the last Core 8.5.5 now i’m not able to go to php7-mapi as it depends on 8.4.5 on univention
when will the repos for ucs 4.3 be available with Kopano Core 8.5.5 ?

We’ll have to wait for UCS 4.3 to be available on the Open Build System to build official packages. Until then you should be able to use the Debian 9 packages. These are also in the app repository (and should be configured by kopano4ucs).